[英]How to add images at runtime of user's choice in a pdf with apache pdfbox
[英]How to add .png images to pdf using Apache PDFBox
当我尝试使用pdfBox绘制png图像时,页面保持空白。 有没有办法用pdfBox插入png图像?
public void createPDFFromImage( String inputFile, String image, String outputFile )
throws IOException, COSVisitorException
{
// the document
PDDocument doc = null;
try
{
doc = PDDocument.load( inputFile );
//we will add the image to the first page.
PDPage page = (PDPage)doc.getDocumentCatalog().getAllPages().get( 0 );
PDXObjectImage ximage = null;
if( image.toLowerCase().endsWith( ".jpg" ) )
{
ximage = new PDJpeg(doc, new FileInputStream( image ) );
}
else if (image.toLowerCase().endsWith(".tif") || image.toLowerCase().endsWith(".tiff"))
{
ximage = new PDCcitt(doc, new RandomAccessFile(new File(image),"r"));
}
else
{
BufferedImage awtImage = ImageIO.read( new File( image ) );
ximage = new PDPixelMap(doc, awtImage);
// throw new IOException( "Image type not supported:" + image );
}
PDPageContentStream contentStream = new PDPageContentStream(doc, page, true, true);
contentStream.drawImage( ximage, 20, 20 );
contentStream.close();
doc.save( outputFile );
}
finally
{
if( doc != null )
{
doc.close();
}
}
}
有一个非常好的实用程序类PDImageXObject来从java.io.File加载图像。 据我所知,它适用于jpg和png文件。
PDImageXObject pdImage = PDImageXObject.createFromFileByContent(imageFile, doc);
contentStream.drawImage(pdImage, 20f, 20f);
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